<div id="example_hello"></div>
<script>

</script>
<style>
    body::before {
        background-image: url("https://image.lunatranslator.org/luna.jpg");
        opacity: 0.1;
        background-size: 100% auto;
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: -1000;
    }

    @media (prefers-color-scheme: dark) {
        :root {
            color-scheme: dark;
        }

        body {
            background-color: rgb(44, 44, 44);
            color: white;
        }
    }
</style>